Home / 120,842,224.78-166,630,307.13-81,615,899.36

Finding the Fourth Proportional to 120,842,224.78, 166,630,307.13 and 81,615,899.36

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Solution

The fourth proportional to 120,842,224.78, 166,630,307.13 and 81,615,899.36 is: 112,540,814.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,842,224.78 : 166,630,307.13 = 81,615,899.36 : x
  2. Step 2: Convert to fraction form
    120,842,224.78/166,630,307.13 = 81,615,899.36/x
  3. Step 3: Cross multiply
    120,842,224.78x = 166,630,307.13 × 81,615,899.36
  4. Step 4: Simplify right side
    120,842,224.78x = 13,599,682,377,047,970
  5. Step 5: Solve for x
    x = 13,599,682,377,047,970/120,842,224.78
  6. Step 6: Final answer
    x = 112,540,814.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.